function array_diff_assoc(arr1) {
  //  discuss at: http://phpjs.org/functions/array_diff_assoc/
  // original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // bugfixed by: 0m3r
  //  revised by: Brett Zamir (http://brett-zamir.me)
  //   example 1: array_diff_assoc({0: 'Kevin', 1: 'van', 2: 'Zonneveld'}, {0: 'Kevin', 4: 'van', 5: 'Zonneveld'});
  //   returns 1: {1: 'van', 2: 'Zonneveld'}

  var retArr = {},
    argl = arguments.length,
    k1 = '',
    i = 1,
    k = '',
    arr = {};

  arr1keys: for (k1 in arr1) {
    for (i = 1; i < argl; i++) {
      arr = arguments[i];
      for (k in arr) {
        if (arr[k] === arr1[k1] && k === k1) {
          // If it reaches here, it was found in at least one array, so try next value
          continue arr1keys;
        }
      }
      retArr[k1] = arr1[k1];
    }
  }

  return retArr;
}